Two cosmetic + functional fixes carried over imperfectly from the
template / hvm-docs clone:
1. .gitignore was over-ignoring corpus/. PLAN.md's design has the
corpus committed (so image-only.yml can build images without
re-scraping). Run 109 hit the same silent `git add corpus` no-op
HVM hit on its first refresh; fixing now to unblock the build.
2. The refresh workflow was tagging commits as "hvm-docs-refresh"
because the workflow was copied wholesale from hvm-docs. Renamed
to "morpheus-docs-refresh" so the git log makes sense.
chroma/ and bm25/ stay ignored — those are rebuilt by
`python -m rag.index --rebuild` at CI time.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
justin